<table width="400px" align="center" id="groups_a_table">
<tr>
    <td align="right" width="30%">Mã nhóm</td>
    <td><input type="text" id="ma" value="" size="20" /></td>
</tr>
<tr>
    <td align="right">Tên nhóm</td>
    <td><input type="text" id="ten" value="" size="25" /></td>
</tr>
</table>
